- All sections
- H - Electricity
- H01H - Electric switchesrelaysselectorsemergency protective devices
- H01H 9/56 - Circuit arrangements not adapted to a particular application of the switching device and for which no provision exists elsewhere for ensuring operation of the switch at a predetermined point in the AC cycle
Patent holdings for IPC class H01H 9/56
Total number of patents in this class: 254
10-year publication summary
|
31
|
17
|
22
|
23
|
19
|
18
|
8
|
11
|
21
|
6
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Rockwell Automation Technologies, Inc. | 2720 |
31 |
| ABB Schweiz AG | 6958 |
27 |
| Siemens AG | 24505 |
18 |
| Mitsubishi Electric Corporation | 46037 |
17 |
| Hitachi Energy Ltd. | 2204 |
12 |
| Kabushiki Kaisha Toshiba, doing business as Toshiba Corporation | 6270 |
11 |
| Amber Semiconductor, Inc. | 37 |
10 |
| Toshiba Corporation | 12334 |
9 |
| Eaton Intelligent Power Limited | 5983 |
8 |
| Lutron Technology Company LLC | 2540 |
6 |
| ABB Technology AG | 1255 |
5 |
| Zonit Structured Solutions, LLC | 114 |
5 |
| Pass & Seymour, Inc. | 171 |
4 |
| ABB Power Grids Switzerland AG | 212 |
4 |
| Siemens Energy Global GmbH & Co. KG | 2948 |
4 |
| GE Aviation Systems Limited | 266 |
3 |
| TE Connectivity Solutions GmbH | 2810 |
3 |
| Johnson Electric International AG | 374 |
3 |
| Honeywell International Inc. | 13539 |
2 |
| Alstom Technology Ltd | 1108 |
2 |
| Other owners | 70 |